How to count specific letterr in a string?

Question

I Created a windows application in c#.net and I wanna count specific character in a string for example i wanna count how many "g" in "Debugging" string:
Someting is wrong with the Substring().I debugged it and i saw it is only check the first character of the string. Any help??

Code:

private void btnclick_Click(object sender, EventArgs e)
{
int lettercount = 0;
const string strtext = "Debugging";
string letter;

for (int i = 0; i < strtext.Length; i++)
{
letter = strtext.Substring(0,1);

if (letter == "g")
{
lettercount++;
}

}
textBox1.Text = "g appears" + lettercount + " " + "times";

}

Output:
"g appears 0 times"

Nilanka Dharmadasa · Answer

Hi Do this change. private void btnclick_Click(object sender EventArgs e) { int lettercount = 0; const string strtext = Debugging; string letter; for (int i = 0; i { letter = strtext.Substring( i 1); if (letter == g) { lettercount++; } } textBox1.Text = g appears + lettercount +   + times; }

Sam Hobbs · Answer

That is so very frusttrating for me. Extremely frustrating. I answered the question; any person capable of programming could understand the answer.

Ever Green · Answer

Hi Niki Thank you very much for help. It is working now. I got the exact output what i was wanting. Thanks a lot again.

Sam Hobbs · Answer

Look closely at the line: letter = strtext.Substring(01); Notice that Substring will always use zero for the index. You need to change that. Also note that instead of strtext.Substring you can use strtext[] to get each character. I would be more specific but I think this is a class problem and the best way to help you is to help you to figure it out.